Expansible core.



L. F. DELANEY.

EXPANSIBLE CORE. APPLICATION FILED 11110.5. 1013.

1 ,1 1 5,057 Patented Oct. 27, 1914.

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L. F. DELANEY.

BXPANSIBLE CORE.

APPLICATION FILED DEU.5.1913.

Patented Oct, 27', 1914.

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EXPANSIBLE CORE.

Specification of Letters Patent.

Patented Oct. 27, 1914.

Application filed December 5, 1913. Serial No. 804,945.

To all 7"]! ma it may concern:

Be it known that l, LAWRENCE F. Dr. LANEY, a citizen of the United Statcs, residing: at lvatertown, in the county of Jefferson and State of New York, have invented certain new and useful Improve merits in Expansible Cores, of which the following is a specification.

This invention relates to improvements in cxpansible cores, and the invention relates particularly to cores of the class for use in winding paper, cloth and tl 1e .like. The object of the invention is to provide a solid shaft which is disposed within a segmental drum or cylinder, each of said parts having a plurality of earn surfaces by means of which the expansion and contraction of the Coreare eil'cctcd.

A further object is to provide novel and simple means carried by the shaft located at the opposite ends of the segmental drum, which cotiperate with parts carried by the drum for efiectin the collapsing of the core. And a, further 0 ject is to provide simple and effective means for locking and holding the device expanded.

The various features and parts of the invention will be understood from the detailed dcscri 'ition which follows, and by reference to the accompanying drawings, in which- Figure l is an elevational view of the complete device; showing the same expanded. Fig. 2 is a brokenlongitudinal section, sub stantially on line 2 2 of Fig. 3; snowing the segments of. the drum expanded and the means for holding the parts in said position. Fig. 3 is a crossscction of the same taken on line 3-3 of Fig. Fig. lis a part elevational and Dart longitudinal section; showing the drum collapsed. Fig. 5 is a cross-section taken on, line 5--5 of Fig. 4.. Fig. (3 is an elvational view of the main shaft. Fig. 7 is a view of the collar member of the clutch, taken on Fig. 8 is a similar view of the collar-,taken on line 8-8 of Fig. 4. Fig. i) is a crosssection taken on line 9-9 of Fig. 2; showing one series of the stops. Figs. 10 and 11 are respectively a face and an edge view of the clutcha'ing. Fig. 12 is a artinl plan vievv of one of the segments. Big.;13 is an end view of the same.

In the drawings, the main shaft A. comprises an enlarged central portion 2, of irregular shape in cross'scction (see Figs. 3

line 7---7 of Fig. 2.,

and 5), having a plurality of equally spaced longitudinal cam-ribs l, which are prefer ably intcgralwith the shaft, but which may be detachable and consist of any suitable material if desired. The shaft A, adjacent the opposite ends of the part 2, is reduced and cylindrical, as at 5, for providing journals the extreme ends 6, of which are squared to receive a key or wrench for rotating the shaft by hand. Near each end the shaft A is fitted with a sleeve 7, which is driven with the shaft hy means of keys 8, which are applied 1n the usual way, and the sleeve is held from longitudinal movement by a set screw 9, which pierces a flange 10 diamctri cally opposite the keys 8. Adjacent the flange 10 the sleeve is externally threaded, as at II, to receive a gland-nut 12. employed for holding certain of the locking parts in place, On the inner end of each sleeve 7 is mounted a collar-like clutch member 13, which is rigidly attached to the sleeve by screws or bolts 1. which pass through the collar and are threaded into the end of the sleeve. The members 13 are provided with three equally spaced irregular openings 15.

1.6 represents a clutch-ring, whi h is joinnaied on the sleeve 7, between the nut lZ'aud the collar 13, and which is provided with three teeth or lugs 17, which face the said collar, and these are inserlml in and partially fill the openings 15 of the collar when the core is expanded (sec 14in; T). 'lherings or members 16 are held in engaged position, as shown in Fig. :2. by the Hilll9. '8 represents a split drum or cylinder which surrounds the shaft A, and upon which paper or cloth may he wound. lhe drum con-- sists of three similar segments, as 18, which are substantially the same length as the enlarged portion .3 of shaft The segments 18 are provided with internal longitudinal cam-ribs or ledges lil, having substantially the same shape in crossseetion as the ribs l, with which they engage during the expanding and contracting opcratioijis. The ribs 19 project beyond each end of the segments 18, and have reduced ends 20, which are disposed and play in the trans verse openings 15 in the collars 13 alongside of the clutch-teeth 1.7 of the ring lh, which serve to hold the segments from rotation intone direction ilulepcndcnt of the shaft A, while the latter is being driven,

during the winding operations. The drum B is held lrcw. rotation in the opposite diwhen the drum is expanded to the full ex-.

tent, as shown in Figs. 1, 2 and 3, the stops bear againstthe shoulders 23, WhlCll limit the expanding movements.

provided for each of the segments 18.

When the drum B is collapsed as shown in Figs. 4. and 5, which is the normal. condition when atrest or idle, the points 20 of the segments 18 are disposed in the ends 15 of the openings 15 oi? members 13. (See Fig. 8). To expand the drum B one operate applies a wrench or key (not shown) to one of the square ends 6 of shaft A, and rotates the said shaft toward the left, while another operator holds drum segments sttv tionary. The partial rotation of shaft A, owing to the incline surfaces 15", spreads the points 20 and the segments 18 apart, and when the drum is fully expanded, the said points are disposed inthe farther ends 15 of the openings 15 of the collar 13, as shown in Fig. 7. I 4 and 19 will be shifted from the position shown in Fig. to that shown in Figs. 3

and 1), and the steps 21 willbe engaging the shoulders 23 of the slots 22. To hold the segments 18 of the drum B in the expanded position, the clutch-rings 16 are .moved up against the members 1 5 and the teeth 17 enter the openings and lie alongside ot' the points of the segments; The nuts 12 are then screwed up tightly against the rin 16, and hold all of the parts locked in'the condition shown in Figs. 2, 3, 7 and 9, ready l'or the winding operation. paper or cloth has been wound on the drum B, the shaft and drum may he readily and quickly removed from the roll, by unscrewing the nuts 12, withdrawing the rings 1-6 from the collars 13 (see Fig. 4-), and then by rotating the shaft A in the opposite direction or to the right, for forcing the tongues 20 of the segments from ends 15 to ends 15 of the slots 15 ot' the coilars',

which effects the collapsing of the drum, s shown in Figs. 4, 5 and 8.

The provision of the oppositely lacin cam-ribs 4 and .19, which extend the full length of the drum ll, allords unyielding supports tor 'the segments 18, and prevents ny springing" or variation in the diameter ol' the cor due to the in reasing weight oi? the roll ol material during the winding operations. 'lhc novel, simple, quick acting and positive adjusting and locking means,

In prac-- tice there are three or four of the stops 21 At the same time, the cam-ribs A t'ter a roll ofcomprisin the sleeves 7, the nuts 12, the collars 13, and the clutch-rings 16, all of which are disposed beyond and clear of the winding surface or portion of the core, enable the users or operators to apply, use and remove the cores with facility and ease, because the working parts are always in view and readily accessible, before, during and after the winding operations.

Having thus described my i.nvention,what I claim as new and desire to secure by Letters. Patent, is

1. A collapsible core, comprising amain shaft provided intermediate its ends with radial'cam-rihs, a segmental drum surrounding said cam-ribs, having. corresponding cam-surfaces engaging said cam-ribs, sleeves mounted on said shaft near the opposite ends of said drum, a clutch carried by each sleeve, comprising a collar having openings to receive projecting ends of the segments of said drum and a ring having teeth capable of entering said openings for preventing the collapsing of said drum, and nuts carried by said sleeves for holding the said collars and said rings interlocked.

2. A. collapsible core,eo1nprising a main shaft provided intermediate its ends with radial cam-ribs a segmental drum surrounding said cam-ribs, havin corresponding cam-sur; aees engaging said camrribs, stops expansion of said drum, sleeves mounted on said shaft near the opposite ends of said drum, a clutch carried by each sleeve,'comcarried bysaid segments-for limiting the prising a collar having openings to receive projecting ends of the segments of said drum and a ring having teeth capable of entering said openings for preventing the eollapsing of said drum, and nuts'carried by said sleeves for holding the said collars and said-rings interlocked.

3. The con'ihination with'a central shaft provided with a. plurality of ca1n-rihs disposed intermediate its ends, of a split drum surronruling the intermediate portion of said shaft, each segment of said drum having cam-surfaces engaging said cam-ribs and having tongues projecting beyond their opposite ends, sleeves mounted on the said. shalt adjacent the ends olr' said cam-ribs, clutch collars secured to said sleeves having openings to receive said tongues, gland-nuts carried by said sleeves, and clutch rings journalcd on said sleeves between said huts and said clutch collars, said clutch-rings having a plurality of teeth adapted to enter the openings in said clutch alongside of said tongues tor holding, said segments expanded.

4. in a collapsible core, a central shaft having longitudinal cam-ribs disposed equidistantly around its body iinerniediate its ends, A is n'iounted on the opposite ends of said shaft adjacent the ends of said cain its ribs and provided with external threads, collar-like clutch members secured to'the sleeves and facing said cam-ribs, said members having transverse openings coinciding with said cam-ribs, a split drum comprisin v a pluralit' of segments surrounding sai shaft, eac of said segments having internal longitudinal cam-ledges engaged by said cam-ribs, and each cam-ledge projecting beyond said segments and having reduced ends which are disposed in the openings of said clutch members, and clutch-rings journaled on said sleeves having teeth adapted to enter the openings in said members.

5. Inv a colla sible core, a central shaft having longitm inal ribs disposed equidistantly around its body intermediate its ends, sleeves rigidl mounted on the opposite ends of said shaft and provided with external threads, collar-like clutch members secured to the sleeves and facing the ends of said cam-ribs, said members having openings 00- ter the openings in said members, and glandnuts carried by said sleeves adapted to hold said clutch-rings in the engagcdposition.

6. An cxpansible core, comprising a shaft, sleeves rigid on said shaft near the opposite ends thereof, a clutch carried by each sleeve, a segmental drum surrounding said shaft between said clutches, each segment of the drum having tongues inserted in the corresponding members of said clutches, and means carried by said sleeves for locking said tongues in the expanded position.

7. In an expansible core, a central shaft, a drum comprising a number of similar segments surrounding a portion of said shaft and provided with lon 'tudinally rejecting tongues, collars rigidy mounted on said shaft at the opposite ends of said drum and I provided with cam-slots to receive said tongues, adapted when rotated with said shaft to expand and contract said drum;

means carried by said segments for limit;

'ing the expanding and contracting move ments of said segments, and means carried by sa d shaft for preventing the aecldental collapsin of said drum.

In testimony whereof I aflix my signature in presence of two witnesses.

.LAWRENCE 1 DELANEY.

Witnesses:

ll. 0. Tnnrnrin,

Fannie A. MoNnIL. 

